Re: [PATCH v3 00/21] IPU6 multi-stream and metadata support preparation

[Antti Laakso <antti.laakso@linux.intel.com>]

Hi Sakari,
On Tue, Sep 22, 2026 at 03:05:17PM +0300, Sakari Ailus wrote:
> Hi folks,
> 
> I split this set off of the metadata series as it seems it can be merged
> early. Basically, it prepares the ipu6 driver for streaming multiple
> streams from a single source, when the rest of the necessary patches are
> merged.
> 
> All the patches in the set can be found in my metadata branch. This set
> possibly depends on the metadata preparation series
> <https://lore.kernel.org/linux-media/20260914114145.574791-1-sakari.ailus@linux.intel.com/T/#t>
> I posted earlier today.
> 
> since v2:
> 
> - Fixed handling failed streamon, i.e. propagate the error in that case.
> 
> - Rework return values for ipu6_isys_csi2_streaming_change() in patch 9.
> 
> - Fix inner loop stream check in ipu6_isys_csi2_streaming_change(), in the
>   same patch.
> 
> since v1:
> 
> - Fix intra-set use of v4l2_subdev_get_frame_desc().
> 
> - Address Antti's comment on assigning dt for a pin (fw term) from struct
>   ipu6_isys_video. Remove vc and dt fields from the same struct, too; they
>   were redundant.
> 
> Sakari Ailus (21):
>   media: ipu6: Fix releasing resources at failing streamon
>   media: ipu6: Move streaming control to CSI-2 receiver driver
>   media: ipu6: Stream number on CSI-2 receiver source pads is always 0
>   media: ipu6: Rename misnamed out_free_watermark label in video init
>   media: ipu6: Always request a capture ack
>   media: ipu6: Clean up link frequency calculation
>   media: ipu6: Get watermark configuration directly from ipdata
>   media: ipu6: Collect IPU streams into CSI-2 receiver sub-device
>     context
>   media: ipu6: Start streaming once all streams have started, stop when
>     not
>   media: ipu6: Add lockdep checks for CSI-2 streaming enable and disable
>   media: ipu6: Remove nr_queues and nr_streaming fields in
>     ipu6_isys_stream
>   media: ipu6: Collect enabled stream IDs
>   media: ipu6: Avoid accessing av->streams before streaming
>   media: ipu6: Rework watermark calculation
>   media: ipu6: Rework watermark setting
>   media: ipu6: Bridge the gap between streams in V4L2 and IPU6 firmware
>   media: ipu6: Drop {get,put}_streams_opened()
>   media: ipu6: Serialise access to stream pointers by isys stream_lock
>   media: ipu6: Move firmware init/cleanup to RPM callbacks
>   media: ipu6: Don't track power status, rely on runtime PM
>   media: ipu6: Support upstream sub-devices without get_frame_desc()
> 
>  drivers/media/pci/intel/ipu6/ipu6-fw-isys.c   | 103 ++-
>  drivers/media/pci/intel/ipu6/ipu6-isys-csi2.c | 380 +++++++++--
>  drivers/media/pci/intel/ipu6/ipu6-isys-csi2.h |  13 +-
>  .../media/pci/intel/ipu6/ipu6-isys-queue.c    | 130 +---
>  .../media/pci/intel/ipu6/ipu6-isys-queue.h    |   2 +
>  .../media/pci/intel/ipu6/ipu6-isys-subdev.c   |  22 +-
>  .../media/pci/intel/ipu6/ipu6-isys-subdev.h   |   2 +
>  .../media/pci/intel/ipu6/ipu6-isys-video.c    | 642 +++++-------------
>  .../media/pci/intel/ipu6/ipu6-isys-video.h    |  61 +-
>  drivers/media/pci/intel/ipu6/ipu6-isys.c      | 212 +++---
>  drivers/media/pci/intel/ipu6/ipu6-isys.h      |  52 +-
>  drivers/media/pci/intel/ipu6/ipu7-fw-isys.c   |  78 ++-
>  12 files changed, 743 insertions(+), 954 deletions(-)
> 

Reviewed-by: Antti Laakso <antti.laakso@linux.intel.com>

> 
> base-commit: aedd77ea8168f00687c1248cdf115071e869cf93
> -- 
> 2.47.3
>